Designed and Manufactured in Australia
The Stormaster ESE air terminal uses the naturally occurring electrical field to complete the timely release of an upward streamer. This process provides for a safe and efficient method of controlling dangerous lightning energy at a preferred point. As a thunderstorm gathers overhead, the ambient electrical field surrounding the Stormaster ESE begins to rise in voltage. Upon the approach of a downward leader towards the protected area, there is a rapid increase in the electric field which initiates the triggering of an upward streamer from the Stormaster ESE terminal. The early initiaton allows for a larger or enhanced area of protection to be provided by the Stormaster ESE in comparison to a conventional rod, in accordance with NF C 17-102 (2011).
NF C 17-102 (2011) requires the installation of two down-conductors for each installed ESE air terminal, with one down-conductor permitted to use electrically continuous natural components of the structure.
Stormaster ESE 15
Stormaster ESE 30
Stormaster ESE 50
Stormaster ESE 60
Guardian CAT I
Guardian CAT II
Guardian CAT III
A ESE terminal consists of a grounded blunt lightning rod surrounded by electrically floating metal panels. Rounded or blunt tips have now been proven to be more efficient than sharp points because of a reduced space charge effect. This has been clearly proven in tests conducted at south baldy peak in central new mexico, usa.(source: “the measurement of lightning rod responses to nearby strikes” by c.b. moore, g.d. aulich and w. Rison / 2001.) During the static thunderstorm phase when the electric fields are steady at 5-15 kv/m the panels present as a relatively low field intensification surface aided by the blunt configuration of the finial tip. This restricts the production of “corona” or “point discharge” ions and is critical because excessive production of ions (corona) results in a “space charge cloud” above the air terminal which tends to mask the electrical field and inhibit the formation and progression of an up-leader. (see step 1)
The panels are isolated from each other as well as from the lightning rod to allow the panel facing the down-leader to rise in voltage due to capacitive coupling with the approaching down-leader. The electric field increases as the lightning downleader approaches closer causing increased voltage difference between the facing panel and the lightning rod. Eventually the voltage rises to the point where a triggering arc is generated between the facing panel and the lightning rod. (see step 2)
By design and appropriate terminal placement this arc occurs at the right time to ensure the resulting streamer will form a stable progressive up-leader. (see step 3)
Lightning Strike Counter
LPI® Srim -20
Without Lightning Protection System
With Lightning Protection System
Lightning discharges contain awesome amounts of electrical energy. It has been measured from several thousand amps to over 200,000 amps – enough to light half a million 100 watt bulbs! Even though a lightning discharge is of a very short duration (typically 200 microseconds) it is a very real cause of damage and destruction. The function of an external lightning protection system is to intercept, conduct and disperse a lightning strike safely to earth. Without such a system a building’s structure, electronic systems and the people working around or within it are all at risk.
During a storm, when the propagation field conditions are favourable, the air terminal first generates an upward leader. This leader from the tip propagates towards the downward leader from the cloud at an average speed of 1 m/μs.
The triggering time ΔT (μs) is defined as the mean gain at the sparkover instant (continuous propagation of the upward leader) obtained with an ESE air terminal compared with a single rod air terminal exposed to the same conditions. ΔT is measured in the high-voltage laboratory, all tests are defined in appendix C of the French standard NF C 17-102.
ESE air terminals are especially effective for the protection of classified industrial sites, administrative or public buildings, historical monuments and open-air sites such as sports grounds.
Air Terminal: As a general rule, the lightning air terminal should culminate at least two meters above the highest points of the building(s) to be protected. Its location should therefore be determined relative to building superstructures: chimneys, machine and equipment rooms, flagpoles, pylons or aerials. Ideally, these vulnerable points should be selected for lightning air terminal installation. The lightning air terminal may be raised by an extension mast.
Down-Conductor: The Down-Conductor is that part of the external Lightning Protection System (LPS) that conducts lightning current from the Air Terminal system to the Earth Termination system. The Down Conductor must be installed straight and vertically in order to provide the shortest and most direct path to earth.
Earth Rods: In a lightning protection system, a earth rod is a single component of the system. The earth rod requires a connection to earth to perform its protective function.
Bangladesh National Building Code (BNBC) gives clear regulations for setting up “Lightning Arrestor” recommended for buildings over 22m high and mandatory for buildings more than 33m high. It is obligatory to take the NOC (No Objection Certificate) for all realtors which comply with BNBC code.
International organizations working in Bangladesh like Accord Bangladesh, Alliance, ILO, Nirapon etc. has made LPS mandatory for every industry to get enlisted with them.
Fire Service and Civil Defense department and, Public Works Dept. (PWD) of Bangladesh government are working relentlessly in lightning awareness and protection in common people.
Rods and protection systems don’t attract lightning, nor do they influence where lightning will strike. They also do not and cannot prevent lightning, nor can they ‘discharge’ thunderstorms.
Lightning protection systems (including placement of rods, cables, and groundings) are custom-designed for individual structures and require complex engineering to function properly. They should only be installed by qualified contractors.
Globally 44,000 thunder storms per day
100 lightning strokes every second
Voltages 1,00,000 kV and peak current 30 kA
Total energy released can reach up to 40 GJ
Lightning hits nearby air at about 10,000°C
Temperature can rise up to 50,000 °C
Lightning strokes ranges from 100 m–8 km in length
Lightning can travel at speed of 60,000 m/sec
Lightning kills 2 in Hobiganj, 28 April, 2019
2 killed, 4 injured in separate lightning strikes in Pabna, 30 March, 2019
Lightning kills 5 in Gazipur, Brahmanbaria, 25 September, 2018
Farmer killed by lightning in Naogaon, 13 September, 2018
Lightning strike kills 3 in Bagerhat, Sunamganj, 12 September, 2018
Lightning strike kills 4 farmers in Magura, 12 September, 2018
3 killed in lightning strike in Narsingdi, 1 killed in Bogra, 12 June, 2018
3 killed in lightning strikes in Kurigram and Rangpur, 7 June, 2018
Lightning strike kills 6 nationwide, 27 May, 2018